The authoritative public forum
  for Metal Finishing since 1989
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How to solve dry solder problem

Q. Our company faced with dry solder problem.
It was major defect in our company. I need some tips from you all regarding this problem.

PERU D N
- IPOH, PERAK, MALAYSIA
2003

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Q. Sir,
We are facing problem in dry soldering of Rf cable networks, due to which, at high temperature, the test connection comes out not meeting testing parameters.
Please advise how to check/identify dry soldering.
Thanking you.

Sadhana Kulkarni
electronics industries - Mumbai, Maharashtra, India
2005

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Dry Solder Problem Sip Sockets / Berg Pins

Q. I want to know the reason for the solderability problem. What are causes for that?

Recently we faced a problem "While assembling the Sip Socket on the PCB we observed pin holes, dry solderability, etc."
Kindly Let me know the reason

Mohan VNK Prasd
ELECTRONICS - AP , HYDERABAD, INDIA
2006

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Hi Mohan.

Let's start with the socket: is it tin plated, silver plated, gold plated, electroless nickel plated, or something else? Is it made of brass, beryllium copper, or phosphorous bronze? Is the solder lead-free? What flux is being used?

"Dry solder" may mean different things to different readers. To me it means the mottled crystalline look which results when something moves during the critical seconds while the solder is cooling. If you're certain that there is no movement, then lack of cleanliness, and persistent heat after the flux has been consumed are two additional problems. I'm sure readers would like to help, but more data probably must be supplied first. Thanks!

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2006

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Q. We are facing dry solder problem in manually done soldering by iron rod. Sometimes it shows open or resistance in mega ohms. Please suggest solution for this problem

Regards,

Vinod Walia
employee - India
December 21, 2010

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December 21, 2010

A. Hi, Vinod. I'm no soldering expert, but perhaps the most basic principle is that components must not move during the critical second or two while the solder is cooling. Since you are doing manual soldering with an iron rod are you sure that the parts are firmly held in place rather than relying on the operator to hold them still? If someone is trying to hold the components in place, cold solder will remain a common problem.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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February 15, 2011

Q. We are a manufacturer of RR and CDI For Motorcycles and facing huge problem related to dry soldering near axle and redial comp. and process is undergoing in wave soldering, still problem remains. Please give at least why analysis with root cause.

Shivraj Agrahar
- Aurangabad, India

Q. Our company faced with dry solder problem.
It was major defect in our company. I need some tips from you all regarding this problem.

Uma Sharma
automotive - INDIA
September 6, 2011

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Can atmospheric problems cause dry solder?

Q. Q. We are doing manual soldering of PVC insulated copper wires (0.20 mm CSA) on copper parts by preheating the copper base and using soldering iron with solder wire dia of 0.8 mm having Sn (60) / Pb (40) with flux content of 2.2%
We are recently facing a lot of dry solder issues in spite of strong process control and 100% manual pull test of wires after soldering. Is there any atmospheric effect on solder joint after soldering which can cause this issue?

H H Kore
- Mumbai, Maharashtra, India
July 23, 2013

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Wave soldering causes dry solder problem

Q. My company is a buzzer manufacturing unit. We are facing dry solder problems. When we check, pieces are okay at that time ... but when we pass at wave soldering stage, after wave soldering the buzzer has no sound or a low sound. Please advise us; it is a very serious issue in company. Please help me to resolve the problem.

SHASHANK Singh
- gurgaon,harayana, India
October 16, 2015